Merge pull request #6 from mario-orlicky/filter-by-empty

Filter by empty

client/components/sidebar/sidebarFilters.jade

@@ -5,6 +5,12 @@
 
 template(name="filterSidebar")
   ul.sidebar-list
+    li(class="{{#if Filter.labelIds.isSelected undefined}}active{{/if}}")
+          a.name.js-toggle-label-filter
+            span.sidebar-list-item-description
+              {{_ 'filter-no-label'}}
+            if Filter.labelIds.isSelected undefined
+              i.fa.fa-check
     each currentBoard.labels
       li
         a.name.js-toggle-label-filter
@@ -18,6 +24,12 @@ template(name="filterSidebar")
             i.fa.fa-check
   hr
   ul.sidebar-list
+    li(class="{{#if Filter.members.isSelected undefined}}active{{/if}}")
+          a.name.js-toggle-member-filter
+            span.sidebar-list-item-description
+              {{_ 'filter-no-member'}}
+            if Filter.members.isSelected undefined
+              i.fa.fa-check
     each currentBoard.activeMembers
       with getUser userId
         li(class="{{#if Filter.members.isSelected _id}}active{{/if}}")

client/lib/filter.js

@@ -63,6 +63,17 @@ class SetFilter {
     this._dep.depend();
     return { $in: this._selectedElements };
   }
+
+  _getEmptySelector() {
+    this._dep.depend();
+    let includeEmpty = false
+    this._selectedElements.forEach((el) => {
+      if (el == undefined) {
+        includeEmpty = true;
+      }
+    });
+    return includeEmpty ? { $eq: [] } : null;
+  }
 }
 
 // The global Filter object.
@@ -95,16 +106,26 @@ Filter = {
       return {};
 
     const filterSelector = {};
+    const emptySelector = {};
+    let includeEmptySelectors = false;
     this._fields.forEach((fieldName) => {
       const filter = this[fieldName];
-      if (filter._isActive())
+      if (filter._isActive()) {
         filterSelector[fieldName] = filter._getMongoSelector();
+        emptySelector[fieldName] = filter._getEmptySelector();
+        if (emptySelector[fieldName] != null) {
+          includeEmptySelectors = true;
+        }
+      }
     });
 
     const exceptionsSelector = {_id: {$in: this._exceptions}};
     this._exceptionsDep.depend();
 
-    return {$or: [filterSelector, exceptionsSelector]};
+    if (includeEmptySelectors)
+      return {$or: [filterSelector, exceptionsSelector, emptySelector]};
+    else
+      return {$or: [filterSelector, exceptionsSelector]};
   },
 
   mongoSelector(additionalSelector) {